Excess lipid accumulation in non-adipose tissues is associated with insulin resistance, pancreatic -cell apoptosis and heart failure. Here, we demonstrate in cultured cells that the relative toxicity of two common dietary long chain fatty acids is related to channeling of these lipids to distinct cellular metabolic fates. Oleic acid supplementation leads to triglyceride accumulation and is well tolerated, whereas excess palmitic acid is poorly incorporated into triglyceride and causes apoptosis. Unsaturated fatty acids rescue palmitate-induced apoptosis by channeling palmitate into triglyceride pools and away from pathways leading to apoptosis. Moreover, in the setting of impaired triglyceride synthesis, oleate induces lipotoxicity. Our findings support a model of cellular lipid metabolism in which unsaturated fatty acids serve a protective function against lipotoxicity though promotion of triglyceride accumulation.
The last decade has seen a groundswell of developments in educational policy in the UK relating to inclusive education for students with special educational needs (SEN). However, whether government policy has been fully implemented in schools remains a concern. The experience of students with autistic spectrum disorders (ASDs) provides an excellent case in point. An increasing number of such students are now educated in mainstream schools, but the limited research in this area has indicated that their experience of school is often marked by bullying, social isolation and anxiety. In light of this, the aim of the current study was to examine the extent to which inclusive educational policy was actually reflected in the practices of four mainstream secondary schools. An exploratory case study approach was adopted, utilising interviews with pupils, teachers, other school staff (e.g., senior managers, learning support assistants) and parents, observations of lessons and other contexts (e.g., lunch time), and document analysis. Our findings highlighted a number of school practices which acted as facilitators or barriers to students’ learning and participation, some of which were generic to SEN provision, and some of which appeared to be specific to those on the autistic spectrum. A discussion of these is presented to enable further understanding of, and inform practice relating to, the inclusion process for students with ASDs.
Facilitating the learning and participation of pupils with Asperger syndrome and high-functioning autism (herein referred to as AS) in mainstream schools is complex and poorly understood. We report on a small-scale qualitative study of the views and experiences of 20 such pupils drawn from four secondary schools in north-west England. Data were collected through semi-structured interviews and pupil diaries. Interpretive phenomenological analysis was used to explore how pupils with AS make sense of their educational experiences. The central theme was how participants constructed their understanding of what their AS meant to them. This was often characterized by negative perceptions of their differences, such as being 'retarded' or having a 'bad brain'. The links between this understanding and reported difficulties with peers and teachers, the desire to 'fit in', and other themes are discussed. The implications of these findings for policy and practice in this area are also presented.
ObjectiveThe retail food environment may be one important determinant of dietary intake. However, limited research focuses on individuals’ food shopping behavior and activity within the retail food environment. This study’s aims were to determine the association between six various dietary indicators and 1) food venue availability; 2) food venue choice and frequency; and 3) availability of healthy food within food venue.MethodsIn Fall, 2011, a cross-sectional survey was conducted among adults (n=121) age 18 years and over in Lexington, Kentucky. Participants wore a global position system (GPS) data logger for 3-days (2 weekdays and 1 weekend day) to track their daily activity space, which was used to assess food activity space. They completed a survey to assess demographics, food shopping behaviors, and dietary outcomes. Food store audits were conducted using the Nutrition Environment Measurement Survey-Store Rudd (NEMS-S) in stores where respondents reported purchasing food (n=22). Multivariate logistic regression was used to examine associations between six dietary variables with food venue availability within activity space; food venue choice; frequency of shopping; and availability of food within food venue.Results1) Food venue availability within activity space – no significant associations. 2) Food Venue Choice – Shopping at farmers’ markets or specialty grocery stores reported higher odds of consuming fruits and vegetables (OR 1.60 95% CI [1.21, 2.79]). Frequency of shopping - Shopping at a farmers’ markets and specialty stores at least once a week reported higher odds of consumption of fruits and vegetables (OR 1.55 95% CI [1.08, 2.23]). Yet, shopping frequently at a super market had higher odds of consuming sugar-sweetened beverages (OR 1.39 95% CI [1.03, 1.86]). 3) Availability of food within store – those who shop in supermarkets with high availability of healthy food has lower odds of consuming sugar-sweetened beverages (OR 0.65 95% CI [0.14, 0.83]).ConclusionInterventions aimed at improving fruit and vegetable intake need to consider where individuals’ purchase food and the availability within stores as a behavioral and environmental strategy.
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